Vol. 33, pp. 103-106 December 30, 1920 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



SOME NEW PLANTS FROM THE PACIFIC NORTH- 

 WEST. 



BY C. V. PIPER. 



In various collections of plants sent to the writer recently 

 from Oregon, Washington and British Columbia, there were 

 found several species not heretofore described. Some of these 

 seem to be very local as they have not been found by other 

 collectors. Most of them are from rather high Alpine localities. 

 The type specimens are in the possession of the writer, unless 

 otherwise indicated. 



Erysimum torulosum, n. sp. 



Biennial, with a stout taproot; stems erect, usually simple, solitary, 

 15-45 cm. high; herbage green, sparsely strigillose throughout with short 

 forked hairs; basal leaves spatulate, acute, coarsely dentate to subentire, 

 3-8 cm. long; cauline similar but reduced, mostly entire; sepals lanceolate 

 acutish, green at first, 7 mm. long; petals yellow, 1.5 cm. long; peduncles 

 in fruit, 1 cm. long; pods ascending or spreading, 4-angled, torulose, strigil- 

 lose, conspicuously beaked, 6-8 cm. long; seeds not margined. 



Mount Rainier, Wash., on Owyhigh, alt. 5500 ft. J. B. Flett, Aug. 11, 

 1919; Nos. 3158 (type), 3160; Mt. Rainier, Piper 2062; Allen 266; Mt. 

 St. Helens, Coville 111. 



This plant must be segregated from E. asperum (Nutt.) DC. on account 

 of its green herbage and very different torulose pods. Perhaps all the 

 specimens from high altitudes in the Cascade and Olympic Mts. are to be 

 referred here, but until the present mature pods seem not to have been 

 collected. 



Arabis macella, n. sp. 



Biennial from a stout taproot; stems many, simple, slender, flexuous, 



terete, sparsely pilose below with simple hairs, otherwise glabrous, 40-50 



cm. tall; basal leaves spatulate-oblong, obtuse, 3 cm. long, the blade longer 



than the margined petiole, glabrous on the faces, the margins ciliate with 



23— Proc. Biol. Soc. Wash., Vol. 33, 1920. (103) 



